public class test {
    public int year = 1900;
    public int month = 1;
    public int day = 1;

    public test(){}

    public test(int year, int month, int day){}

    public static void main(String[] args) {
        test d1 = new test(2025, 6, 4);
        test d2 = new test();
    }
}
